/*

* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Message query dialog suitable for verifier plug-in use.

*

*/

#ifndef CLPDMESSAGEPLUGINDIALOG_H

#define CLPDMESSAGEPLUGINDIALOG_H

// INCLUDES

#include <aknmessagequerydialog.h>

#include "lpdbkupevtobserver.h"

// FORWARD DECLARATIONS

class MLpdDlgObserver;

class CLpdBkupEvtListenerAO;

class MLpdBkupEvtObserver;

// CLASS DECLARATION

/**

*  A message query dialog suitable for verifier plug-in use.

*  Inherits from CAknMessageQueryDialog, utilizes MLpdDlgObserver

*  for notifying when dialog is dismissed.

*

*  @lib locverifierdlg.lib

*  @since 2.1

*/

class CLpdMessagePluginDialog : public CAknMessageQueryDialog, public MLpdBkupEvtObserver

	{

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param aCallBack is notified when dialog is dismissed

        * @param aSelfPtr caller's ptr is set to null when dialog is deleted

        * @param aSelected will contain selected items when available, i.e.

        *                  since observer callback (in multiselectionlist)

        * @return created object

        */

        static CLpdMessagePluginDialog* NewL(

                    MLpdDlgObserver& aCallBack,

                    CLpdMessagePluginDialog ** aSelfPtr

                    );

        /**

        * C++ destructor.

        */

        virtual ~CLpdMessagePluginDialog();

    public: // Functions from base classes

        /**

        * From CAknDialog. Wrapper method for enabling better unit testing

        * when using a stub implementation.

        * @param aResourceId

        */

        void PrepareLC( TInt aResourceId );

        /**

        * Wrapper that suppresses application switching

        * and call's base class RunLD().

        */

        TInt RunLD();

		void HandleResourceChange(TInt aType);

    public: // New functions

        /**

        * Allows exiting the dialog without user action.

        * Can be called e.g. in case of timeout. Main reason for

        * this method is that deleting a dialog is not a proper

        * way to exit it. Calling this method causes

        * MLpdDlgObserver::HandleDlgDismissedL() callback with

        * EEikCmdExit result.

        */

        void ExitDialogL();

        /**

        * Similar as ExitDialogL(), but no callback method

        * is called.

        */

        void ExitDialogQuietlyL();

    protected: // Functions from base classes

        /**

        * From CAknListQueryDialog.

        * @param aButtonId

        * @return ETrue if dialog can be dismissed

        */

        TBool OkToExitL(TInt aButtonId);

    private:  // Constructors and destructor

        /**

        * Symbian 2nd Phase Constructor.

        */

		void ConstructL();

        /**

        * C++ constructor.

        * @param aCallBack is notified when dialog is dismissed

        * @param aSelfPtr caller's ptr is set to null when dialog is deleted

        * @param aSelected will contain selected items when available, i.e.

        *                  since observer callback (in multiselectionlist)

        */

        CLpdMessagePluginDialog(

                    MLpdDlgObserver& aCallBack,

                    CLpdMessagePluginDialog ** aSelfPtr

                   );

    private:    // Data

        // Object which is notified when query is dismissed

        MLpdDlgObserver& iCallBack;

        // Holds the status of application switching

        TBool iAppSwitchSuppressed;

        // Caller's pointer to this query object is set to NULL

        // when ExecuteLD destroys the object

        CLpdMessagePluginDialog** iSelfPtr;

        // Reference to the Backup Event Listener

        CLpdBkupEvtListenerAO* iBkupListener;

	};

#endif      // CLPDMESSAGEPLUGINDIALOG_H   

// End of File